A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 5930-01-036-8330
NSN 5920-00-378-1395
NSN 6610-01-463-8866
NSN 6645-01-068-3042
NSN 5905-01-203-4754
NSN 5910-01-408-9482
NSN 6620-01-499-7705
NSN 5996-01-390-2125
NSN 5945-01-599-8450
NSN 5930-01-107-9225
NSN 5960-00-898-9145
NSN 5935-01-415-0887